If you look down into your missing fuse slots, you will notice there are no connectors in them to receive a fuse.

They are for options that your car does not have and thus were left empty, but as the same fusebox is used across all the models, the slots for the fuses must be there.

If you look at the fuses too, you will note little numbers next to them, these numbers corrospond to the numbers on the cover. This will tell you what the fuse is for.

Ignore the empty slots, virtually all cars have these.

__________________James Bond shifted down into third gear, drifted the Saab 900 Turbo into a tight left-hand turn, clinging to the grass shoulder, then put a fraction more power to bring the car out of the bend.